Pain synaesthesia may be a symptom of an abnormal, ongoing hypervigilance.

疼痛联觉可以说是一种非正常的、持续性的过度警觉的表现。

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Less frequently occurring side effects include pain in the face, erythema, or abnormal redness at the injection site, and muscle weakness.

较少发生的副作用包括疼痛的脸，红斑，或在注射部位红肿异常、而肌肉麻痹。

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Background: Patellofemoral pain syndrome is one of the most common knee problems and may be related to abnormal patellar tracking.

背景知识概要：髌股关节疼痛综合症是最常见的膝关节病变之一，可能和异常的髌骨轨迹有关。

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At Christmastime 2008, Von Lipinski didn't think much about the pine needle prick until the redness started spreading and he experienced abnormal pain.

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